Label the Bronsted-Lowry acids and bases below and conjugate acids and conjugate bases below:?

Question

a) PH3 + H2O <-> PH+4 + OH-

b) HCO3 + HCO3 <-> H2CO3 + CO3 -2

Answer 1

PH3 B-L base (and (PH4)+ is its conj acid)
(HCO3)- is both and acid and a base, and H2CO3 is the conj acid, and (CO3)2- the conj base.